Question

Law of motion , describe in brief all. ​

Answer 1

Explanation:

Law of motion

Newton’s laws of motion, relations between the forces acting on a body and the motion of the body, first formulated by Issac Newton

Newton's first law of motion

Newton’s first law states that, if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force. This postulate is known as the law of inertia. The law of inertia was first formulated by Galileo Galilei for horizontal motion on Earth and was later generalized by René Descartes. Before Galileo it had been thought that all horizontal motion required a direct cause, but Galileo deduced from his experiments that a body in motion would remain in motion unless a force (such as friction) caused it to come to

rest.

Newton's second law of motion

2nd law of motion is a quantitative description of the changes that a force can produce on the motion of a body. It states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it. The momentum of a body is equal to the product of its mass and its velocity. Momentum, like velocity, is a vector quantity, having both magnitude and direction. A force applied to a body can change the magnitude of the momentum, or its direction, or both. Newton’s second law is one of the most important in all of physics. For a body whose mass m is constant, it can be written in the form F = ma, where F (force) and a (acceleration) are both vector quantities. If a body has a net force acting on it, it is accelerated in accordance with the equation. Conversely, if a body is not accelerated, there is no net force acting

on it.

Newton's third law of motion

3rd law states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction. The third law is also known as the law of action and reaction. This law is important in analyzing problems of static equilibrium, where all forces are balanced, but it also applies to bodies in uniform or accelerated motion. The forces it describes are real ones, not mere bookkeeping devices. For example, a book resting on a table applies a downward force equal to its weight on the table. According to the third law, the table applies an equal and opposite force to the book. This force occurs because the weight of the book causes the table

to deform slightly so that it pushes back

on the book like a coiled spring.

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Answer 2

Answer:

Sir Issac Newton has given three laws of motion

First law of motion:-

• An object remain in state of rest or uniform motion in a straight line unless compelled change of state by an applied force.

Second law of motion:-

• The force necessary to change in the momentum of an object depends on time rate at which momentum is changed.

Third law of motion:-

• there is an equal and opposite reaction. This can be observed both in objects at rest and those that are accelerating.